Use the '--netrc' cmdline option or set the 'netrc' config option
to 'true' to enable the use of .netrc authentication data.
The 'machine' names for the .netrc info are the lowercase extractor
names (or categories): batoto, exhentai, nijie, pixiv, seiga.
The output can be configured via the 'output.progress'
config value.
Possible values:
- true: Show the default progress indicator
"[{current}/{total}] {url}" (default)
- false: Never show the progress indicator
- <string>: Show the progress indicator using this
as a custom format string(1).
Possible replacement keys are:
- current: current URL index
- total : total number of URLs
- url : current URL
(1) https://docs.python.org/3/library/string.html#formatstrings